67827-88-7 Benzamide, 4-((2-hydroxy-1-naphthalenyl)azo)-N-(4-((2-hydroxy-1-naphthalenyl)azo)phenyl)-, tetrakis(aminomethyl) deriv. Benzamide, tetrakis(aminomethyl)(4-((2-hydroxy-1-naphthalenyl)azo)-N-(4-((2-hydroxy-1-naphthalenyl)azo)phenyl)-